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Cod sursa(job #53320)
#include<fstream.h>
ifstream f("divprim.in");
ofstream g("divprim.out");
int x[7]={2,3,5,7,11,13,17},j,b;
long p,n,i,a;
int main()
{
f>>n;
for(i=1;i<=n;i++)
{
f>>a;
f>>b;
if(b==1 && a>=9)
g<<9<<"\n";
if(b==1 && a<9)
g<<0<<"\n";
if(b!=1)
{
p=1;
for(j=0;j<=b-1;j++)
p=p*x[j];
if(p<=a)
g<<p<<"\n";
else g<<0<<"\n";
}
}
f.close();
g.close();
return 0;
}